#!/usr/bin/python
#-*-coding:utf-8 -*-
score =int (raw_input('输入赵本山的考试成绩'));
if score<=100 and score>90:
    print '爸爸给他买辆车';
elif score>=90 and score<100:
    print '妈妈给他买MP4';
elif score>=60 and score<90:
    print '妈妈给他买本参考书';
elif score<60 and score>=0:
    print '什么都不买';
else:
    print '输入错误';